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Drying Sterilizers

SI401/601 (with optional rack)
Reasonable price and features an easy programming function
The product is equipped a temperature controller VS4, which has improved ease of operation. This is a standard, natural convection, programmable drying sterilizer for laboratories with easier setting.

Operating temp. range
Room temp. + 5 to 260 deg.C
Temp. distribution accuracy
20 deg.C (at 260 deg.C)
Internal capacity
77L (401)/159L (601)

PDF Catalog
  • The product features extensive functions for quick, safe, and reliable sterilization.
  • Features a program controller for up to 30 steps, six patterns with the repeat function.
  • Using the dedicated operation menu keys and the digital setting system with UP/DOWN keys, you can select fixed operation, program operation, quick auto stop operation, auto stop, auto start operation by simple operation.
  • You can make settings for the overheat preventive device, calibration offset, and key lock using the sub function keys.
  • The product facilitates extensive safety functions including: self diagnostic circuit (temperature sensor malfunction, heater disconnection, automatic overheat preventive device, SSR short circuit), over heat preventive device, over current electric leakage breaker, and key lock function.

Product code 292227 292228
Model SI401 SI601
System Natural convection drying sterilizer for laboratories*1
Operating temp. range Room temp. + 5 to 260 deg.C
Temp. adjustment accuracy 2 deg. C (at 260 deg.C)
Temp. distribution accuracy 20 deg.C (at 260 deg.C)
Time to attain max. Temp. Approx. 70 min
Interior material Stainless steel plate
External material Cold rolled steel plate, epoxy melamine resin finishing
Heater Iron-chrome wire heater 1.2 kW Iron-chrome wire heater 1.36 kW
Exhaust port I.D. 30 mm x 2 (top side)
Temperature control system PID control with a micro computer
Temperature display system Measured temp. display: Four-digit green LED digital display
Set temp. display: Four-digit red LED digital display
Timer 1 min to 99 hrs 59min and 100 to 999 hrs 50 min (with a timer wait function)
Operation functions Fixed operation, program operation, quick auto stop, auto stop, auto start
Program mode Six pattern program operation (30 steps x 1, 15 steps x 2, 10 steps x 3), pattern repeat function
Sensor K-thermocouple (temperature controller, overheat preventive device) (W sensor)
Safety functions Self diagnostic function (Temp. sensor error, heater disconnection, SSR short circuit, automatic overheat prevention function), overheat preventive device, over current preventive electric leakage breaker, key lock function
Bath internal dimensions 450 x 430 x 400 mm (W x D x H) 600 x 530 x 500 mm (W x D x H)
External dimensions*3 550 x 540 x 777 mm (W x D x H) 700 x 640 x 877 mm (W x D x H)
Internal capacity 77L 159L
Withstand loading of shelf Approx.15 kg/each
Number of shelves 10 13
Shelf peg pitch 30 mm
Power source AC100V 50/60 Hz 12.2A(15A) AC100V 50/60 Hz 13.6A(20A)
Weight Approx. 42 kg Approx. 59 kg
Ground wire 1
Shelves 2 (the bottom one is fixed with screws)
Shelf and shelf peg Stainless steel punching metal shelves x 2
Shelf peg x 4 (One set is for fixing interior material)

*1 This product is not a medical device.

*2 Condition: Temperature and humidity 23 deg.C+/-5 deg.C; 65%RH+/-20%.

*3 External dimensions do not include protrusions.

Control Panel
The controller allows easy inputs using the dedicated operation menu keys and UP/DOWN keys and setting and measurement, overheat prevention temperature can be displayed digitally.

Internal bath Shelf & peg

Dimensional drawing (mm)

Optional Items
Remark Description Model No. Product Code
Stand ONS60 (for 401/601) SI Series 212802
  Stacking clamp ODK82 (for 401) SI Series 212804
  Stacking clamp ODK84 (for 601) SI Series 212805
  Shelf for 401 SI Series 212095
  Shelf for 601 SI Series 212266
External communication function SI Series 281240
External communication adapter SI Series 281241
Temperature output terminal SI Series 281242
External alarm terminal SI Series 281243
Time up output terminal SI Series 281244
Independent overheat preventive device SI Series 281245
1. The item marked " ● " in the column of "Remark" shall be ordered together with the main unit.
2. The transportation cost will not be required if the order is together with main unit except the item marked "○".
In case you order the item marked "○" together with the main unit, please ask Yamato to obtain the correct transportation cost.
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